Problem

erdos:249

True ↔ Irrational (∑' (n : ℕ), ↑n.totient / 2 ^ n)

Open Current State

Declared status: open
Formalization: formalized
Subjects: number theoryirrationality
OEIS: A256936
Sources: source:erdos-problemssource:formal-conjectures
Statement: www.erdosproblems.com

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